Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to 8370ac160a97b856a994c4a0b8a178675df195a1
  - Updating RKE version to Frankfurt
    
    Updating RKE to v1.0.4 for Kubernetes 1.15.9
    
    Issue-ID: OOM-2403
    
    Signed-off-by: Tomáš Levora <t.levora@partner.samsung.com>
    Change-Id: I87c3f9f4800aa40f62d7569b4ecf3fa373a16796
    
1 file changed